MP 1,1-5,1 Mac Pro 4,1 (flashed to 5,1) all of the sudden no 5ghz network anymore.

[Teachermark01]

I have bought the upgrade kit for the mac pro so it can run with the 5ghz networks. It worked in the beginning but now it does not anymore and I don't know why... The 2ghz networks are just running fine, also the bluetooth (version 4) is running without problems. I checked all the connectors inside the MacPro, they are all good connected... but no 5ghz networks in my WIFI list (anymore).

Tried to reset the networksettings, deleted all the settings, reboot etc.. but nothing is working..

Running MacOS Mojave (10.14.6) on it...

 

[minifridge1138]

Which upgrade kit did you buy?

 

[Teachermark01]

Which upgrade kit did you buy?

Bought this one of ebay: https://www.ebay.com/itm/Apple-Mac-...e=STRK:MEBIDX:IT&_trksid=p2057872.m2749.l2648